31013232112 has 10 divisors (see below), whose sum is σ = 60088137248. Its totient is φ = 15506616048.

The previous prime is 31013232097. The next prime is 31013232143. The reversal of 31013232112 is 21123231013.

It is a self number, because there is not a number n which added to its sum of digits gives 31013232112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969163488 + ... + 969163519.

Almost surely, 2^31013232112 is an apocalyptic number.

It is an amenable number.

31013232112 is a deficient number, since it is larger than the sum of its proper divisors (29074905136).

31013232112 is a wasteful number, since it uses less digits than its factorization.

31013232112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938327015 (or 1938327009 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31013232112 its reverse (21123231013), we get a palindrome (52136463125).

The spelling of 31013232112 in words is "thirty-one billion, thirteen million, two hundred thirty-two thousand, one hundred twelve".